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diff --git a/contexts/data/lib/closure-library/closure/goog/positioning/viewportclientposition.js b/contexts/data/lib/closure-library/closure/goog/positioning/viewportclientposition.js
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--- a/contexts/data/lib/closure-library/closure/goog/positioning/viewportclientposition.js
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@@ -1,121 +0,0 @@
-// Copyright 2006 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Client viewport positioning class.
- *
- * @author robbyw@google.com (Robert Walker)
- * @author eae@google.com (Emil A Eklund)
- */
-
-goog.provide('goog.positioning.ViewportClientPosition');
-
-goog.require('goog.math.Box');
-goog.require('goog.math.Coordinate');
-goog.require('goog.math.Size');
-goog.require('goog.positioning.ClientPosition');
-
-
-
-/**
- * Encapsulates a popup position where the popup is positioned relative to the
- * window (client) coordinates, and made to stay within the viewport.
- *
- * @param {number|goog.math.Coordinate} arg1 Left position or coordinate.
- * @param {number=} opt_arg2 Top position if arg1 is a number representing the
- * left position, ignored otherwise.
- * @constructor
- * @extends {goog.positioning.ClientPosition}
- */
-goog.positioning.ViewportClientPosition = function(arg1, opt_arg2) {
- goog.positioning.ClientPosition.call(this, arg1, opt_arg2);
-};
-goog.inherits(goog.positioning.ViewportClientPosition,
- goog.positioning.ClientPosition);
-
-
-/**
- * The last-resort overflow strategy, if the popup fails to fit.
- * @type {number}
- * @private
- */
-goog.positioning.ViewportClientPosition.prototype.lastResortOverflow_ = 0;
-
-
-/**
- * Set the last-resort overflow strategy, if the popup fails to fit.
- * @param {number} overflow A bitmask of goog.positioning.Overflow strategies.
- */
-goog.positioning.ViewportClientPosition.prototype.setLastResortOverflow =
- function(overflow) {
- this.lastResortOverflow_ = overflow;
-};
-
-
-/**
- * Repositions the popup according to the current state.
- *
- * @param {Element} element The DOM element of the popup.
- * @param {goog.positioning.Corner} popupCorner The corner of the popup
- * element that that should be positioned adjacent to the anchorElement.
- * One of the goog.positioning.Corner constants.
- * @param {goog.math.Box=} opt_margin A margin specified in pixels.
- * @param {goog.math.Size=} opt_preferredSize Preferred size fo the element.
- * @override
- */
-goog.positioning.ViewportClientPosition.prototype.reposition = function(
- element, popupCorner, opt_margin, opt_preferredSize) {
- var viewportElt = goog.style.getClientViewportElement(element);
- var viewport = goog.style.getVisibleRectForElement(viewportElt);
- var scrollEl = goog.dom.getDomHelper(element).getDocumentScrollElement();
- var clientPos = new goog.math.Coordinate(
- this.coordinate.x + scrollEl.scrollLeft,
- this.coordinate.y + scrollEl.scrollTop);
-
- var failXY = goog.positioning.Overflow.FAIL_X |
- goog.positioning.Overflow.FAIL_Y;
- var corner = popupCorner;
-
- // Try the requested position.
- var status = goog.positioning.positionAtCoordinate(clientPos, element, corner,
- opt_margin, viewport, failXY, opt_preferredSize);
- if ((status & goog.positioning.OverflowStatus.FAILED) == 0) {
- return;
- }
-
- // Outside left or right edge of viewport, try try to flip it horizontally.
- if (status & goog.positioning.OverflowStatus.FAILED_LEFT ||
- status & goog.positioning.OverflowStatus.FAILED_RIGHT) {
- corner = goog.positioning.flipCornerHorizontal(corner);
- }
-
- // Outside top or bottom edge of viewport, try try to flip it vertically.
- if (status & goog.positioning.OverflowStatus.FAILED_TOP ||
- status & goog.positioning.OverflowStatus.FAILED_BOTTOM) {
- corner = goog.positioning.flipCornerVertical(corner);
- }
-
- // Try flipped position.
- status = goog.positioning.positionAtCoordinate(clientPos, element, corner,
- opt_margin, viewport, failXY, opt_preferredSize);
- if ((status & goog.positioning.OverflowStatus.FAILED) == 0) {
- return;
- }
-
- // If that failed, the viewport is simply too small to contain the popup.
- // Revert to the original position.
- goog.positioning.positionAtCoordinate(
- clientPos, element, popupCorner, opt_margin, viewport,
- this.lastResortOverflow_, opt_preferredSize);
-};